There are 19 zip codes in Cobb County, Georgia. The most populated is 30127, located in Powder Springs. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
30127Powder Springs71,642
30062Marietta62,958
30101Acworth62,284
30066Marietta60,795
30144Kennesaw58,836
30080Smyrna53,116
30064Marietta50,997
30067Marietta46,595
30152Kennesaw43,865
30126Mableton42,865
30060Marietta39,125
30008Marietta34,331
30339Atlanta34,292
30068Marietta33,866
30082Smyrna26,080
30168Austell24,599
30106Austell23,977
30111Clarkdale0
30090Marietta0

Cobb County, Georgia Zip Codes by Population (2024)